1 /* 2 * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <malloc.h> 9 #include <errno.h> 10 #include <div64.h> 11 #include <dfu.h> 12 #include <spi.h> 13 #include <spi_flash.h> 14 15 static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size) 16 { 17 *size = dfu->data.sf.size; 18 19 return 0; 20 } 21 22 static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf, 23 long *len) 24 { 25 return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset, 26 *len, buf); 27 } 28 29 static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset) 30 { 31 return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) * 32 dfu->data.sf.dev->sector_size; 33 } 34 35 static int dfu_write_medium_sf(struct dfu_entity *dfu, 36 u64 offset, void *buf, long *len) 37 { 38 int ret; 39 40 ret = spi_flash_erase(dfu->data.sf.dev, 41 find_sector(dfu, dfu->data.sf.start, offset), 42 dfu->data.sf.dev->sector_size); 43 if (ret) 44 return ret; 45 46 ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset, 47 *len, buf); 48 if (ret) 49 return ret; 50 51 return 0; 52 } 53 54 static int dfu_flush_medium_sf(struct dfu_entity *dfu) 55 { 56 return 0; 57 } 58 59 static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu) 60 { 61 return DFU_DEFAULT_POLL_TIMEOUT; 62 } 63 64 static void dfu_free_entity_sf(struct dfu_entity *dfu) 65 { 66 spi_flash_free(dfu->data.sf.dev); 67 } 68 69 static struct spi_flash *parse_dev(char *devstr) 70 { 71 unsigned int bus; 72 unsigned int cs; 73 unsigned int speed = CONFIG_SF_DEFAULT_SPEED; 74 unsigned int mode = CONFIG_SF_DEFAULT_MODE; 75 char *s, *endp; 76 struct spi_flash *dev; 77 78 s = strsep(&devstr, ":"); 79 if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) { 80 printf("Invalid SPI bus %s\n", s); 81 return NULL; 82 } 83 84 s = strsep(&devstr, ":"); 85 if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) { 86 printf("Invalid SPI chip-select %s\n", s); 87 return NULL; 88 } 89 90 s = strsep(&devstr, ":"); 91 if (s && *s) { 92 speed = simple_strtoul(s, &endp, 0); 93 if (*endp || !speed) { 94 printf("Invalid SPI speed %s\n", s); 95 return NULL; 96 } 97 } 98 99 s = strsep(&devstr, ":"); 100 if (s && *s) { 101 mode = simple_strtoul(s, &endp, 0); 102 if (*endp || mode > 3) { 103 printf("Invalid SPI mode %s\n", s); 104 return NULL; 105 } 106 } 107 108 dev = spi_flash_probe(bus, cs, speed, mode); 109 if (!dev) { 110 printf("Failed to create SPI flash at %d:%d:%d:%d\n", 111 bus, cs, speed, mode); 112 return NULL; 113 } 114 115 return dev; 116 } 117 118 int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s) 119 { 120 char *st; 121 char *devstr_bkup = strdup(devstr); 122 123 dfu->data.sf.dev = parse_dev(devstr_bkup); 124 free(devstr_bkup); 125 if (!dfu->data.sf.dev) 126 return -ENODEV; 127 128 dfu->dev_type = DFU_DEV_SF; 129 dfu->max_buf_size = dfu->data.sf.dev->sector_size; 130 131 st = strsep(&s, " "); 132 if (!strcmp(st, "raw")) { 133 dfu->layout = DFU_RAW_ADDR; 134 dfu->data.sf.start = simple_strtoul(s, &s, 16); 135 s++; 136 dfu->data.sf.size = simple_strtoul(s, &s, 16); 137 } else { 138 printf("%s: Memory layout (%s) not supported!\n", __func__, st); 139 spi_flash_free(dfu->data.sf.dev); 140 return -1; 141 } 142 143 dfu->get_medium_size = dfu_get_medium_size_sf; 144 dfu->read_medium = dfu_read_medium_sf; 145 dfu->write_medium = dfu_write_medium_sf; 146 dfu->flush_medium = dfu_flush_medium_sf; 147 dfu->poll_timeout = dfu_polltimeout_sf; 148 dfu->free_entity = dfu_free_entity_sf; 149 150 /* initial state */ 151 dfu->inited = 0; 152 153 return 0; 154 } 155